| 234 |
Kevin |
1 |
#ifndef I2C1_H
|
|
|
2 |
#define I2C1_H
|
|
|
3 |
|
|
|
4 |
#define MAXI2C1BUF 32
|
|
|
5 |
|
|
|
6 |
// I2C Operating Speed
|
|
|
7 |
#define I2C1_400KHZ 0x0
|
|
|
8 |
#define I2C1_100KHZ 0x1
|
|
|
9 |
|
|
|
10 |
// Operating State
|
|
|
11 |
#define I2C1_IDLE 0x1
|
|
|
12 |
//#define I2C1_STARTED 0x2
|
|
|
13 |
#define I2C1_RCV_DATA 0x3
|
|
|
14 |
//#define I2C1_SEND_DATA 0x4
|
|
|
15 |
#define I2C1_SEND_ADDR 0x5
|
|
|
16 |
#define I2C1_SEND_ADDR_2 0x6
|
|
|
17 |
#define I2C1_CHECK_ACK_SEND 0x7
|
|
|
18 |
#define I2C1_CHECK_ACK_RECV 0x8
|
|
|
19 |
#define I2C1_CHECK_ACK_RESTART 0x9
|
|
|
20 |
#define I2C1_REQ_DATA 0xA
|
|
|
21 |
#define I2C1_SEND_STOP 0xB
|
|
|
22 |
//#define I2C1_SEND_START 0xC
|
|
|
23 |
|
|
|
24 |
// Operating Mode
|
|
|
25 |
#define I2C1_MODE_SLAVE 0x10
|
|
|
26 |
#define I2C1_MODE_MASTER 0x11
|
|
|
27 |
|
|
|
28 |
// Master Status
|
|
|
29 |
#define I2C1_MASTER_SEND 0x20
|
|
|
30 |
#define I2C1_MASTER_RECV 0x21
|
|
|
31 |
#define I2C1_MASTER_RESTART 0x22
|
|
|
32 |
#define I2C1_MASTER_IDLE 0x23
|
|
|
33 |
|
|
|
34 |
// Return Status
|
|
|
35 |
#define I2C1_SEND_OK 0x30
|
|
|
36 |
#define I2C1_SEND_FAIL 0x31
|
|
|
37 |
#define I2C1_RECV_OK 0x32
|
|
|
38 |
#define I2C1_RECV_FAIL 0x33
|
|
|
39 |
#define I2C1_DATA_AVAL 0x34
|
|
|
40 |
#define I2C1_ERR_NOADDR 0x35
|
|
|
41 |
#define I2C1_ERR_OVERRUN 0x36
|
|
|
42 |
#define I2C1_ERR_NODATA 0x37
|
|
|
43 |
#define I2C1_ERR_BUFFER_OVERRUN 0x38
|
|
|
44 |
|
|
|
45 |
typedef struct {
|
|
|
46 |
uint8_t buffer_in[MAXI2C1BUF];
|
|
|
47 |
uint32_t buffer_in_len;
|
|
|
48 |
uint32_t buffer_in_read_ind;
|
|
|
49 |
uint32_t buffer_in_write_ind;
|
|
|
50 |
|
|
|
51 |
uint8_t buffer_out[MAXI2C1BUF];
|
|
|
52 |
uint32_t buffer_out_len;
|
|
|
53 |
uint32_t buffer_out_ind;
|
|
|
54 |
|
|
|
55 |
uint8_t operating_state;
|
|
|
56 |
uint8_t return_status;
|
|
|
57 |
|
|
|
58 |
uint8_t master_dest_addr;
|
|
|
59 |
uint8_t master_status;
|
|
|
60 |
|
|
|
61 |
uint8_t slave_in_last_byte;
|
|
|
62 |
uint8_t slave_sending_data;
|
|
|
63 |
} I2C1_DATA;
|
|
|
64 |
|
|
|
65 |
void I2C1_Init(I2C1_DATA *data, uint8_t speed, uint8_t address);
|
|
|
66 |
void I2C1_Master_Send(uint8_t address, uint8_t *msg, uint32_t length);
|
|
|
67 |
void I2C1_Master_Recv(uint8_t address, uint32_t length);
|
|
|
68 |
void I2C1_Master_Restart(uint8_t address, uint8_t msg, uint32_t length);
|
|
|
69 |
void I2C1_Interrupt_Master(void);
|
|
|
70 |
void I2C1_Interrupt_Slave(void);
|
|
|
71 |
uint8_t I2C1_Get_Status(void);
|
|
|
72 |
uint8_t I2C1_Buffer_Len(void);
|
|
|
73 |
uint8_t I2C1_Read_Buffer(uint8_t *buffer);
|
|
|
74 |
uint8_t I2C1_Process_Request(uint8_t);
|
|
|
75 |
|
|
|
76 |
#endif /* I2C1_H */
|
|
|
77 |
|